venn() is a new function that produces Venn diagrams for up to
5 sets. The interface
is almost identical to euler() except that a single integer
can also be provided. A new vignette, Venn diagrams with eulerr,
examplifies its use.
Calculations for the strips in plot.euler() when a list of
Euler diagrams is given has been improved. Setting fontsize or cex now results in appropriately sized strips as one would expect.
Tiny overlaps (where the fraction of the area is less than one
thousandth of the largest overlap) in the final diagram are no longer
eulergram() objects from plot.euler() now have a proper grob name
for the canvas grob, so that extracting information from them is easier.
Return value documentation for euler() now correctly says "ellipses"
and not "coefficients".
data.frame or matrix inputs now work properly
when values are given as numerics. (#42)